The main structure of the steam superheater for the Huajin AAME project, with a total weight of 988 tons, has been installed

Thread Content

! The main structure of the steam superheater for the Huajin AAME project, with a total weight of 988 tons, has been installed. Recently, new progress was made in the construction of the Huajin AAME fine chemicals and raw materials processing facility. The last module, M-10, of the convection section of the steam superheater (2040-F-201/219) for the ethylbenzene/styrene unit, which was under EPC contract by Kunlun Engineering Company’s Shenyang branch affiliated with CNPC Engineering, was installed in place. With this, the installation of the main structure of the steam superheater is now complete. It is reported that the steam superheater (2040-F-201/219) is a vertical box-type furnace with dual-chamber vertical tubes, of the radiation-convection type, and includes a radiation section, a convection section, a chimney module, etc. Due to the limitations of transportation conditions at the construction site, the steam superheater cannot be manufactured as a single unit; therefore, a modular manufacturing and transportation approach is adopted for the convection section and the chimney. The convection section of the superheater is divided into multiple modular units; each module has all its internal components such as furnace tubes, tube sheets, and linings fabricated, installed, and tested in the manufacturing facility, before being transported to the site using large-scale lifting equipment for assembly. The convection section of the steam superheater installed this time is divided into 10 modules in total, with a combined weight of 988 tons. The lifting was carried out using a 400-ton crawler crane through a direct lifting method. The modular transportation and lifting method significantly reduces tasks such as on-site assembly and welding at heights, shortens the installation period, ensures product quality and installation accuracy, and lays a solid foundation for the subsequent handover and commissioning of the equipment. It is understood that the Huajin AAME fine chemicals and raw materials project will mainly construct a total of 32 processing units, including one with a refining capacity of 15 million tons per year and another for producing ethylene with a capacity of 1.65 million tons per year. Currently, the ethylbenzene/styrene plant project is in its peak construction phase, with mechanical completion expected in late September 2025. Once completed and put into operation, the facility will be capable of producing 700,000 tons of styrene per year, while the associated ethylbenzene unit will produce 736,000 tons of ethylbenzene per year.